They will report increase in distress on lying down.
Signs
Stridor is a sign characterised by a high pitched breathing sound resulting from turbulent air flow
Consider cause: intrinsic obstructing lesion or extrinsic compression from adjacent structure, for example thyroid.
Management
If stridor is an anticipated part of disease progression (for example head and neck cancer), prepare the patient and carer and ascertain wishes where possible.
Ensure wishes are documented in Advance Care Plan/ electronic Key Information Summary
If tracheostomy is an option arrange emergency admission for definitive procedure to alleviate obstruction
If tracheostomy is not an option treatment will depend on anticipated prognosis
If the patient is felt to be imminently dying treat any distress with †midazolam 10mg IV or IM
Otherwise consider immediate management with corticosteroids with gastroprotection (usually proton pump inhibitor),
†Dexamethasone 16mg orally (or IV) immediately and subsequently †Dexamethasone 8mg twice daily orally (second dose before 2pm if possible). Discontinue promptly if no benefit and reduce gradually in responders.
In discussion with senior doctor consider nebulised adrenaline (1:1000) 1mg to 5mg driven on oxygen. Assess response and repeat if necessary.